Combined type-writing and computing machine.



F. A. HART.

COMBINED TYPE WRITING AND COMPUHNG MACHlNE.

APPLICATION FILED DEC. 30. 150B.

Patented June 25, 1918.

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F. A. HAP COMBINED TYPE WRITING AND COMPUTING MACHINE.

. APPLICATION FILED DEC. I0, 1908- 1 ,270,41 1 Patented June 25, 1918.

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COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED DEC.1U 1908- 1 ,270,4 1 1 Patented June 25, 1918.

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F. A. HART.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

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APPLICATION FILED DEC. 10. I908.

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APPLICATION FILED DEC. 10. I908. 1,270,41 1. Patented June 25, 1918 l5 SHEETSSHEET l0.

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F. A. HART. COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED DEC. I0. I908. 1,270,41 1 Patented June 25,1918.

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COMBINED TYPE WRIUNG AND COMPUTING MACHINE.

APPLICATION FILKD DEC. 10. 1508- 4 1,270,41 1 Patented June 25, 1918..

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COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILD DEC. [0, I908.

Patented June 25, 1918;

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APPLICATION FILED DECFHJ, I905. 7 1,270.41 1 PatmtedJunv 25,1918

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FREDERICK A. HART, OF HARTFORD, CONNECTICUT, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO UNDEBWOOD COMPUTING MACHINE COMPANY,

CORPORATION OF NEW YORK.

OF NEW YORK, N. Y., A

COMBINED TYPE-WRITING AND COMPUTING MACHINE.

Specification of Letters Patent. Patented June 25, 1918.

Application filed December 10, 1908. Serial No. 466,836.

To all whom it may concern Be it known that I, Fnnonnrcu A. Il um, a citizen of the United States, residing at Hartford, in the county of Hartford and elevation,

State of Connecticut, have invented certain new and useful Improvements in Combined Ty e-Writing and Computing Machines; and I do hereby declare the fol owing to be a full, clear, and exact description of the invention, such as will enable others Skilled inthe art to which 't appertains to make and use the same.

My invention relates to computing mnchines and to combined typewriting and computing machines, and broadly stated, has for its object to improve the construction and operation of machines of this general character;-

To the above .ends, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

This invention is especially designed as an improvement on, or as a refinement of, combined. typewriting and computing machines'of the type disclosed in Letters Patentof the United States, issued to Hans Hanson, No.- 816,319', of date March 27th, 1906; and No. 905,421, of date December 1st. 1908.

My improved typewriting. and computing machine isiillustrated in the nccompanying drawings; wherein like characters refer to -like parts throughout the several views.

Inthe drawings: V Figure 1 is a plan view showing the complete typewriting and computing machine. Fig. 2 is a: rear elevation of the complete typewritin and computing machine with some parts I'OkGh away. I

Fig. 3 is a. side elevation showing the complete typewriting and-computing machine, some arts being broken away, and some parts eing sectioned.

Fig. 4 1s a skeleton view partly in side and partly in vertical section, with some parts broken away, shift key mechanism of the typewriter, and illustrating the relation thereof to parts of the so-called decimal order selecting mechanism. i

Figs. 5, 6 and 7 are details in rear elevation, showing parts of the decimal order Fi called and showing the Fi 10 IS a vertical section taken approximately on the line w" w" of Fig. 8,

with the typewriter and certain other parts removed.

Fig. 11 is a fragmentary view in vertical section taken from frontto'ward the rear of the machine, approximately through the central portion thereof, and illustrating the action of the so-called register bar intercepting stop.

Fig. 12 is a vertical section taken approximately on the line a m" of Fig.

with the typewriter and certain other parts removed.

Fig. 13 is a detail View in plan, with some parts broken away and some parts removed, showing the so-called unit bars and asso-' cinted parts.

Fig. 14 is a front elevation of the shown in Fig. 13, showing also, under ying register bars, unit pins, andcertam otherl parts, said unit bars being sectioned.

Fig.

Fig. 16 is a transverse vertical section. taken on the irregular line mFm of Fig. 141,

Fig. 17 is a detail view partly in side elevation and partly in section, showing a? clutch device which constitutes part of the zero mechanism, for resetting the register wheels at zero.

18 is a plan view showing the so zero bar, part thereof being broken awe ig. 21 is a side elevation of the said reg- Fig. 19 is aside elevation of said zero bar and shows also several'of the unit bars and 15 is a detail in transverse vertical, section taken on the line w m" of Fig. 14.

ion

ister bar, and shows also in section, several of the overlying unit bars and a portion of the unit bar frame.

Fig. 22 is an enlarged detail, partly in plan and partly in horizontal section, illustrating the manner in which the unit pins are mounted on the register bars.

Fig. 23 is a section taken approximately on the line 0;" w of Fig. 22.

Fig. 24 is a detail in vertical section taken approximately on the line w? w" of Fig. 8, some parts being broken away.

Fig. 25 is a p an view of parts shown in Fig. 24, some parts being broken away, and some parts being removed.

Fig. 26 is a detail showing in side elevation, one of the lower selecting levers of the decimal order selecting mechanism, a plurality of which are shown in Figs. 24 and 25 and elsewhere.

Fig. 27 is a transverse vertical section viewed from the rear, taken approximately on the line av w" of Fig. 25, some parts being removed. I

ig. 28 is a plan view of the socalled transfio'sing bars shown in Figs. 24 and 25, all ot er parts being removed. Fig. 29 is a detail in vertical section taken on the line m m of Fig. 1.

Fig. 30 is a plan view of the arts shown yin-Fig. 29, some parts being bro en awa Fig. 31 is a section taken on the line at C8" of Fig. 29.

Fig. 32 is a detail with parts broken awe showirg a guide for the upper ends of t e lever connecting rods of ,the decimal order selecting mechanism, and of the punc tuation-space key-locking mechanism.

Fig. 33 is a detail view taken in section on the line w m" of Fi 8, showing the zero key'and zero bar an cooperating connections. 1

, Fig. 34 is a transverse section taken on the line 0: a! 'ofFig. 33.

Fig. 35 is a detail view showing, in plan,

portions of the unit pin restoring'rlevice, of

the unit bars, the register bars, unit pins, the zero bar, the register bar 'ntercepting ship, and certain other parts. y

- 1g. 36 is a detail insection taken on the line 0: as" of Fig. 35.

Fig. 37 is a detail view chiefly in rear elevation with some parts sectioned, showing'a full stroke device for the operating lever and operating carriage.

' Fig. 38 is a section taken on the line 0: is of Fig. 37. Fig. 39 is a section taken on the line in to of Fig. 38, some parts being broken away.

Fig. 40 is a detail of the side elevation, showing the reversing lever of the said full stroke device, some parts being broken away.

Fig. 41 is a detail view inside elevation,

bars.

Fig. 42 is a section taken on the line m" m of Fig. 41; and

Fig. 43 is a section taken approximately on the line m as of Fig. 1.

In the detailed description, the following classification of mechanism and of reference notations appropriated thereto, are made, to-wit:--

The parts of the typewriter and of the computer case, designated by numerals.

Register proper, designated by a and its powers.

The unit bars, their connections to numeral keys of typewriter, and associated parts, designated by b and its powers. 7

Decimal order register bars, unit pins or preliminary representation devices, operating carriage and associated parts, including variable throw and full stroke devices, designated by c and its powers,

Decimal order selecting meehanism,designated by f and its powers.

Punctuation-space key-locking mechanism, designated by r and its powers.

Zero device, designated by k and its powers.

'Error correcting devices, designated by p and its powers.

Additional safety devices, including car- .riage operated numeral-key lock; register bar intercepting stop; register bar safety lock, operated by error correcting key and by operating carriage; .and carriage operdicated by t and its powers.

ated transposing bar depressing device, in-

1 ;12ew1'i-ter and computer case.

The typewriter illustrated is a No. 5 Underwood, the construction and operation of which, is well understood. Hence, for the purposes of this case, parts of this typewriter will be identified only to an extent which will make clear the relation of the typwriting mechanism to the computing mechanism.

Directing attention particularly to Fi s. 1, 2 Yam] 3, the numeral 1 represents tle typewriter, frame, the numeral 2 the typeshaft 9, mounted in suitable hearings on the carriage 2, and it has the customary wheel 10 that runs upon a guide rod 11, connected for parallel movements by a pair of hell crank levers 12 secured to a rock shaft 13, which in turn, is journaled in suitable bearings on the sides of the typewriter frame 1, all as best shown in Figs. 3 and 4. The paper supporting roller or platen 14, is, of course, carried by the supplemental frame 2.

The upwardly extended rear ends of the shift keys 6, engage the backs of the bell crank levers 12, so that when either one of the shift keys is depressed, rod 11 will be raised, thereby liftin up the supplemental frame 2 with its to] or or platen 14, so as to thereby present the printing surface of the paper on the roller, to the upper case letters of the t pe bars.

In the norms position of the parts, best shown in Fig, 4, a lock pin 15 on the lower end of one of the bell crank levers 12, en-

ges the rear extremit of a cam slot 16 ormed in the'rear on of a downwardly spring pressed shift lock lever 17 intermediately pivoted on a fixed rod 18 and subiect, at ts forward end, to a cam acting roc er19, the upper end of which in turn, is subject to theaction of a cam pin or projection 20 on one of the shift keys- 6, By

this means, the supplemental section 2" of the typewriter carriage, while,alwa s free for common traveling movements with the main.- section 2 of. the said typewriter carriage, is nevertheless. normally locked against rising movement, b the enga ment 0 the said pin 15 with t e upwar y extended rear extremi V of the said slot 16. This locking feature as an important relation to the decimal order selecting mechanism, hereinafter described.

The numeral 21 indicates a spring held line feed lever which is connected to the platen or roller 14, in the customary way, through a pawl and. ratchet device, so that i when the' said lever is moved toward the On the front of the upper portion of the typewriter frame 1, is a long. transversely extended scale 23, with which a pointer '24 on the typewriter carriage 2, cooperatesin indicate a transverse location onthe paper,

where characters willbe printed, in any position of the typewriter carria e. The numeral 25 indicates stops adjustaqfly secured on a transverse rod, (not shown), which in mounted on the typewriter frame turn, is rigidly secured to the typewriter frame 1 at the up er front portion thereof, to-wit, immediate y below the scale 23. These stops 25 serve to variably limit the extreme travel of the typewriter carriage.

The numeral 26 indicates upwardly sprin r pressed tabulating keys, (see Figs. 1 i

which as above stated, is t e typewriting machine illustrated in the drawings.

For the purpose of this case, it is only necessary to state, that the depression of any tabulating key will depress also one of the shift keys 6, (as shown, the ri ht hand shift key), while the depression 0 the said shift key will not depress any of the said tabulating keys; and that this is accomplished by means of an upwardly spring, pressed bail 27, pivotally connected to the typewriter frame 1, with its transverse free portion underlying all of the said tabulating keys 26; and by a link 28, pivotally connected to an extension 6 of the said right hand shift key 6, andhaving a slot that is engaged by the head of the stud 29 on one side of the said bail 27, as best shown in Fig. 3.

The Underwood typewriter No. 5 is provided with an automatic speed governing ig. 2, the numeral 31 indicates a'bevel gear rigidly attached to the spring barrel 32 that incases the main spring (not shown) which propels the carriage in its operative movement. The numeral 33 indieates a tpinion meshin with the bevel gear 31 an secured on a ort shaft,having its hearings in the cylindrical casing 34 that contains the speed regulating mechanism proper. This cylindrical casing is'pivotally and nor mally it is swung away from the bevel gear 31 sothat the pinion 33 is out of mesh with said bevel gear during the ordinary movements of the typewriter carriage.

The tabulating keys 26 through connection (not shown), operate, when any one thereof is depressed, to move the casing 34 on its pivot, and therebyrause the pinion 33 to mesh with the gear 31; and in this way, the speed governing mechanism is thrown into action whenever a tabulating key is depressed, andthe typewriter carriage is disconnected from its step by step cscapemcnt mechanism.

The computer case upon which the typewriter frame is detachably mounted, and within or upon which, most of the parts of the computing mechanism are directly or indirectly mounted, is indicated by the numeral 30, and as shown, it is of rectangular box-like form, and is provided with various bearings and shafts and other parts which will be particularly noted in connection with other groups of mechanisms.

The register.

For the purpose'of independently listing and adding numbers in several columns, on a sheet of paper, the machine herein illustrated,. is provided with several registers having corresponding independently operating decimal order selecting mechanisms, and corresponding preliminary representation devices, including register bars, and unit pinsmounted thereon.

My inventionis notin the field of register construction per se. Each register may comprise a group of decimal order digitbearin wheels (0, all as shown, mounted on a cross s raft a, supported by bearing brackets rising from the bottom of the computer case 30. On their hubs, the register wheels a have loosely mounted gears 11*, connected therewith through ratchet and one-way ball clutches, not shown, and these, as will hereinafter appear, mesh with the teeth of underlying register bars, and are subject to the action of the latter, when the so-called operating carriage of the computer is moved forward. The register wheels are held against accidental movements by sprin held lovers a, mounted on a transverse to a. On a. parallel cross shaft a, are mounted certain wheels constituting parts of the tens-carrying mechanism, two of these only appearing in the drawings, to-wit, the sixtoothed wheel a and the three-toothed. wheel a. On another cross shaft a, are mounted a series of gear segments or toothed arms a", which coiiperate with the parts on the shaft a, in the tens-carrying action. 1

The tens-carrying shafta has a pinion a" connected therewith by a. one way clutch device, not shown, but which may be identical with that shown in Fig. 17; and this pinion a meshes with an intermediate gear a" journaled on one side of the case 30, and meshing with the left hand rack bar 0" of the operating carriage hereinafter described, as best shown in Fig. 12.

The counting wheels I: may be simultaneously operated or moved different distances by the coiiperating register bars, under the forward action of the computer carriage, and thereby, the tens-carrying devices will be so set that the tens will be carried forward, from one denomination to the other, in the regular order of the decimal scale, or from right toward the left, under the return movement of the computer operating carriage.

Umlt bars, and their connections to numeral keys of typewriter.

Directing attention particularly to Fi s. 3, 8, 9, 13 and 14, it will be seen that t e numeral keys 5 are provided with depending push bars I), that work through slots in the forwardly projecting flange of a transversely extended elongated rectangular frame I), supported from the computer case 30. Preferably, the unit har frame b is detachably mounted on the computer case 30, see Figs. 10 and 14, and hence, the ends of the transverse bars of said frame are notched at 2 for engagement with the depressed ends of supporting stri s 2 rigidly secured on the sides of the sai case 30.

To make bars 6 adjustable and removable, they are pivoted on studs 1; of couplin brackets b that are intermediately pivoted on the numeral keys 5, and are adjustably locked thereto by opposing set screws b; and said brackets are provided with laterally movable retaining springs b", that hold said bars from accidental uncoupling, as best shown in Figs. 41 and 42.

Iri the frame b are journaled a series of nine rock shafts b, spring held in their normal positions, and extending in a direction from front toward the rear of the comwords, that extend transversely of the computer case'30 and of the underlying register bars, presently to be described. As shown in Fig. 14, the ends of unit bars 6' work in grooves 12 cut in the lower transverse end bars of the frame b and are thereby held against lateral movements. Each unit bar 6" is coupled to a correspondingoverlying tie bar b", b a pair of bell cranks b", which are loose y mounted on transverse rods 6. secured to the-sides of the frame 5 Each rock shaft 15 has a. short arm 5,

shown as provided with a slotted end that engages a stud or projection b on the corresponding tie bar b", see Fig. 14. These arms 6, see Fig. 13, are arranged on an oblique line, so that the numeral keys from lower to higher orders, or in a direction from left toward the right, are con led to, or operative on, the series of unit ars located successively from the front toward the rear of the machine, this being done for an important purpose which Wlll appear when considering the arrangement of the unit pins or preliminary representation devices, on the register bars.

As shown in 'Fig. 14, 6 indicates coiled springs, which yieldin 1y pull the unit bars 6 upward, and normally hold the same and the cooperating bell cranksb, tie bars I)", rock shafts b, and rock shaft arms I). and b, in the positions best shown in said Fi Vith the construction described, it is evident, that the depression of one of the numeral keys will result in the de ression of the correspondin unit bar b. t will also be noted, particu arly by reference to Fig.

. 14, that a very conslderable portion of the downward movement of the depressed numeral key, is required to bring the connected push bar b into-engagement with the corresponding rock shaft arm '6'; and in this connection, it may be also noted, that the upper arms of the bell cranks b are very short as compared with the lower arms thereof, so that a very small portion of the final downward movement of a numeral key .is required to effect a considerable downward movement of the corres nding unit the numeral keys 5 in normalor inoperative bar. The especial object of t is construction, is to provide for very light touch and rapid successive movements of the numeral keys, by depending very largely uppn the momentum of the the unit bars '1')".

For cooperation with other p'arts, to lock type bars to operate positions under several different 0 'erations, a series of rockers or cam blocks 13 provided, andthese so-called rockers, as shown,

- arepivotall connected to the vertical front plate or si e of thc irame b, and are ara prevent the operation of more than one GOr' iromputing mechanisms when any one of,

numeral. key at a time, that is, to look all other numeral keys in their normal posi tions, or inpositions in 'which they cannot be made to operate either the printing :1:

' lhejnumeral keys is operatively -(le 'ressed,

each of saidnumeral keys is provide with a depending lock stem that is arranged to be forced downward between the underlying two adjacent rockers, and thereby take up all play between the rockers and stops 6. These lock stems b arepreferably individual members that work through slots 6" 1n the forwardly projecting flange of the frame 6, and at their upper ends, see Figs. 3 and 41, are pivotally connected to coupling branches b" intermediately pivoted to theintermediate portions of the respective bars I), and adjustably secured thereto b opposin set screws 6*. The adjusta le couphng brackets b and 6" permit of very accurate adjustment of the bars 6 and atoms 6", in respect to the cooperating rock shaft arms 6 and rockers b", so that the preeise elative times of action thereof may be properly regulated. By reference to Fig. 14, it will be noted that the lower ends of the stems b" will be engaged with the cooperatin rockers b before the corresponding bars will be engaged with the cooperating rock shaft arms b.

It ma be further added, that the play between t e rockers b and stops b", is only sufficient to allow one of the lock stems b" to be forced downward between the said rock ers, at any onetime.

Decimal order register bars, unit pins or preliminary representation devices, operati can-iage and associated parts, incllu ring variable throw and full stroke devices.

Attention is particularly called to Figs. 8, 9, 20, 21, 22 and 23. For each register, comprising as shown, nine digit bearing wheels, there is a series of eight so-called re ister bars, to-wit, one for each register whee except the register wheel of highest order, which latter is at the extreme left in respect to Fig. 8. These register bars 0 extend from front toward the rear of the machine, below the unit bars I), and hence at a right angle to the latter, and are independently movable. At their forward ends, the register bars a have toothed rack portions that mesh with the gears a of the respective register wheels a. At their rear ends, the said register bars are guided for ion itudinal movements and are permitted imited vertical mormnents, by a guide comb or slotted plate 1-, that is rigidly secured, as shown, to a transverse bottom bar 30 of the' computer case 30; The rear ends of these register bars are yiuldingl y held down by light springs shown on Fig. '24. At their forward ends. said register bars 0 slide over and are capable of a slight rocking action on a fulcrum rod a, supported by the register bearing brackets 30. and preferably notched so as to hold the forward ends of said register bars properly spaced. 

